Survival outcomes of third molar autotransplantation according to impaction severity: a retrospective cohort study

• 발행기관: 대한구강악안면외과학회
• 저자명: Kang-Hee Lee Yong-Suk Choi Pil-Young Yun Ji-Young Yoon Jeong-Kui Ku
• 간행물 정보: 『대한구강악안면외과학회지』제51권 제4호, 198~204쪽, 전체 7쪽
• 주제분류: 의약학 > 일반외과학
• 파일형태: PDF
• 발행일자: 2025.08.31

국문 초록

Objectives: Autotransplantation of third molars with complete root formation is a well-established surgical approach for replacing missing teeth, offering biological advantages over conventional prosthetic or implant therapies. The severity of third molar impaction may significantly influence autotransplantation prognosis, yet its clinical significance has not been thoroughly investigated. Materials and Methods: This retrospective cohort analysis assessed for autotransplantation of the third molar. Patients were categorized based on impaction severity, and Kaplan-Meier survival analysis was conducted to estimate cumulative Survival rates. Differences in survival according to impaction severity were assessed using the log-rank test, with further evaluation of associated factors. Results: A total 227 autotransplantation patients (118 males, 109 females, 45.4±14.4 years) and the mean follow-up duration was 26.8 months, achieving an overall 5-year cumulative survival rate of 72.0%. Fully impacted teeth exhibited significantly superior survival outcomes (93.3%) compared to fully erupted (62.9%) and partially impacted teeth (82.9%) (P<0.001). Lower patient age was also significantly associated with better survival (P=0.002). Younger age (≤30 years) was also significantly associated with better survival outcomes (P=0.002). No significant survival differences were found regarding sex, splinting period, extra-socket time, or healing period. Conclusion: Impaction severity is a critical prognostic factor influencing the prognosis of autotransplantation by using the third molars. Comprehensive preoperative evaluation of donor tooth condition, particularly regarding impaction severity, is essential to maximize transplantation outcomes.

목차

Ⅰ. Introduction

Ⅱ. Materials and Methods

Ⅲ. Results

Ⅳ. Discussion

Ⅴ. Conclusion

ORCID

Authors’ Contributions

Funding

Conflict of Interest

References

키워드

Transplantation Third molar Impacted tooth Survival rate Prognosis